package com.project.shtp;

import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
public class Enrcrypt {
    @Test
    void EncryptTest() {
        String str = "20211121";
        System.out.println(str.substring(0, 4));
        System.out.println(str.substring(4, 6));
        System.out.println(str.substring(6, 8));
    }
}
